# The Nautical School ExamTutor+ vs CBDR

The clearest difference is rating: CBDR at 5.0 against The Nautical School ExamTutor+'s 4.1. CBDR also leads on in-app purchases (none vs 1) and update cadence (weekly vs every 5 weeks). The Nautical School ExamTutor+'s advantage is ratings volume (25 vs 5) and iOS requirement (13.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. The Nautical School ExamTutor+ sells 1 one-off in-app purchase. CBDR asks for nothing beyond the download.

CBDR holds the better App Store score, 5.0 against 4.1. That said, the two scores are not equally well evidenced: The Nautical School ExamTutor+ has 25 ratings behind it against 5, so its average is the more settled of the two.

The Nautical School ExamTutor+ ships an update every 5 weeks, CBDR weekly. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | The Nautical School ExamTutor+ | CBDR |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (25 ratings)](https://appshunter.io/ios/app/the-nautical-school-examtutor-plus/id1309809624/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/cbdr/id6792199258/reviews)** |
| Number of ratings | **25** | 5 |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Weekly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 14 MB | 80 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Nautical School](https://appshunter.io/developer/1309809623) | [Sean Bowman](https://appshunter.io/developer/6792199260) |

## What reviewers say

### The Nautical School ExamTutor+

[App page](https://appshunter.io/ios/app/the-nautical-school-examtutor-plus/id1309809624)

Prepare for your USCG OUPV examination with this comprehensive learning program. It offers over 1,300 practice questions, instant feedback, and detailed explanations to help you master the Nautical Inland and International Rules of the Road.

**Highlights:** 1300+ practice questions, Instant feedback and explanations, Progress tracking and scoring, Learning and Flashcard modes, Bonus questions for endorsements, Simulates exam environment

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Purchase Full App | $24.99 | one-time |


### CBDR

[App page](https://appshunter.io/ios/app/cbdr/id6792199258)

This app trains junior deck officers and watchstanders in essential radar watch skills, including contact evaluation, COLREGS classification, and generating contact reports. It features a live radar scope, generated scenarios for various navigation situations, and drills for recognition and maneuvering.

**Highlights:** Live radar scope with vectors and trails, Generated navigation scenarios, COLREGS classification, Contact report scoring, Maneuvering board drills, Recognition drills, USCG Rules of the Road test bank, Offline group testing

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is The Nautical School ExamTutor+ free?

The Nautical School ExamTutor+ is free to download, with in-app purchases available.

### Is CBDR free?

CBDR is free to download, with no in-app purchases.

### Which has better reviews, The Nautical School ExamTutor+ or CBDR?

CBDR is rated higher. The Nautical School ExamTutor+ averages 4.1 out of 5 from 25 ratings, while CBDR averages 5.0 from 5 ratings.

### Do The Nautical School ExamTutor+ or CBDR have ads?

Neither The Nautical School ExamTutor+ nor CBDR shows ads.

### Which is updated more often, The Nautical School ExamTutor+ or CBDR?

The Nautical School ExamTutor+ ships an update every 5 weeks, and CBDR weekly. Most recently, The Nautical School ExamTutor+ was updated on November 4, 2026 and CBDR on October 31, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*